The most obvious is the wheels and the organosol paint on the hood, battery, radiator cap, intake (but it looks like they have the steel one), screw clamps on hoses, clear overflow hose (and plastic bottle), no fan shroud, glove box lock, steering column, both door panels, chrome dana cover, chrome on gas pedal but not clutch and brake, undercoted gas tank, hardware store bolts mounting rear bumper, trunk floor?, blower for rear defog is missing, shouldn't have two 6X9 holes in the package tray unless it had a rear speaker option, and obvious rust.
All that said, when I first glanced at the auction I thought it was for a restored car. Now, after looking at all the other pics, I think it's a semi restored car, having been painted, probably seats, and some freshening under the hood. So parts of the car are as original (or unrestored if you prefer) and parts have been redone, but not to a high level.
Still, it's a nice car, but maybe $30K is a little high. BUT, I can understand if someone were to pay the asking price.
